This article is by Professor Gregory M. Duhl of William Mitchell College of Law. It's forthcoming in the spring edition of the Lewis and Clark Law Review but for now can be found on SSRN here.

From the abstract:

This
Article provides the first comprehensive discussion of the ethical
obligations and duties to non-clients of lawyers drafting contracts. It
discusses fraudulent representations, errors, fraud, and "conscious
ambiguity" in transcription, as well as "iffy" and invalid clauses, and
argues that the standard for lawyer misconduct under the disciplinary
rules should be consistent with the purposes of contract law, one of
which is to promote trust between contracting parties. Additionally,
the Article discusses lawyer liability for negligence to non-parties in
contract drafting and contends that lawyers should be liable to
non-parties only when they are third-party beneficiaries to the
contract between the lawyer and client for the lawyer‘s services. The
Article concludes by arguing for a functional set of ethical rules for
lawyers drafting contracts that reflect the increasing emphasis on
cooperation, rather than competition, in the contracting process.